AMD XCV400E-8PQ240C

Overview

XCV400E-8PQ240C from Xilinx is a 1.8 V SRAM-based Field Programmable Gate Array (FPGA) with 569,952 system gates and 10,800 logic cells in a 40 × 60 CLB array. It delivers up to 240 MHz synchronous system performance, supports LVDS/BLVDS/LVPECL differential I/O at 622 Mb/s, and integrates eight digital Delay-Locked Loops (DLLs) for clock management. It is used in high-speed communication interface design, such as PCI 66-MHz bridge logic and source-synchronous data capture subsystems.

For engineers reviewing the XCV400E-8PQ240C datasheet, pinout, applications, or equivalent options, this page provides verified architecture details, I/O banking constraints, DLL timing behavior, block RAM configuration options, and package-specific routing limitations - all confirmed against DS022-1 (v2.3) and DS022-4 (Pinout Tables).

Technical Context

The XCV400E-8PQ240C implements a regular array architecture with Configurable Logic Blocks (CLBs), Input/Output Blocks (IOBs), and dedicated Block SelectRAM columns placed every 12 CLB columns. Each CLB contains four logic cells with 4-input LUTs, carry chains, and dual flip-flops per slice, supporting true dual-port 4096-bit RAM blocks and arithmetic-intensive functions like pipelined multipliers.

Its IOBs support 20 I/O standards-including LVTTL, LVCMOS2, SSTL3, HSTL, and LVDS-with banked VCCO/VREF constraints. Eight DLLs provide zero-delay clock conversion, 4× multiplication, and 50% duty-cycle correction for DDR applications. The device uses a 0.18 μm 6-layer metal CMOS process and requires 1.8 V core supply (VCCINT) with 3.3 V tolerant I/O banks.

Key Specifications

Pinout & Package

PQ240 refers to a 240-pin Plastic Quad Flat Package (PQFP) with 0.5 mm pitch, 32.5 mm × 32.5 mm body size, and exposed thermal pad. Pin assignment follows Xilinx DS022-4 Module 4, with dedicated global clock inputs (GCLK0–GCLK3), configuration pins (INIT, PROGRAM_B, CCLK), JTAG boundary-scan signals (TCK/TMS/TDI/TDO), and banked VCCO/VREF pins distributed across four I/O banks (Bank 0–3).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FPGA-based interface and control applications.

Compared with XCV400E-7PQ240C, the XCV400E-8PQ240C provides tighter timing margins for 240 MHz operation and LVDS capture; compared with XCV600E-8PQ240C, it offers lower power and cost at the expense of logic capacity and block RAM - making it optimal for mid-complexity interface consolidation.

Availability

XCV400E-8PQ240C is available at Aetrix Electronics and suitable for PCI bridge logic, DDR SDRAM controller design, source-synchronous data acquisition, and LVDS/LVPECL interface consolidation requiring stable component supply and long-term industrial lifecycle support.

Supply support for XCV400E-8PQ240C includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Xilinx, Inc. is a semiconductor company specializing in programmable logic devices, acquired by AMD in 2022. It pioneered FPGA architecture and toolchain development for high-performance digital system design.

The Virtex-E family was designed for high-speed, high-density programmable logic applications demanding advanced I/O flexibility, integrated clock management, and scalable memory resources - targeting communications infrastructure, test equipment, and industrial control systems.

FAQ

What is the maximum differential I/O pair count supported by XCV400E-8PQ240C?

XCV400E-8PQ240C supports up to 183 differential I/O pairs, as specified in Table 1 of DS022-1 (v2.3). This count is fixed for the XCV400E device regardless of package; however, only 404 total user I/O pins are accessible in the PQ240 package, limiting simultaneous differential use due to pin-sharing constraints and I/O banking rules.

Does XCV400E-8PQ240C support LVPECL clock inputs?

Yes, XCV400E-8PQ240C supports LVPECL clock inputs up to 300+ MHz, as stated in the "Differential Signalling Support" section of DS022-1. LVPECL-compatible clock inputs must be routed to dedicated differential-capable pins in banks configured with 3.3 V VCCO, and require external termination to 2.0 V.

How many DLLs does XCV400E-8PQ240C include, and what are their key capabilities?

XCV400E-8PQ240C includes eight fully digital Delay-Locked Loops (DLLs). Each supports clock multiply (up to 4×), divide, zero-delay conversion of LVPECL/LVDS inputs to any I/O standard, and digitally synthesized 50% duty cycle for DDR applications - all confirmed in DS022-1 Section "High-Performance Built-In Clock Management Circuitry".

Is XCV400E-8PQ240C pin-compatible with other Virtex-E devices in the PQ240 package?

XCV400E-8PQ240C is pin-compatible with XCV50E, XCV100E, XCV200E, and XCV300E in the PQ240 package per DS022-1 Section "Virtex-E Compared to Virtex Devices". However, I/O bank assignments, VREF pin usage, and dedicated function pin mappings (e.g., GCLK locations) differ across densities and must be verified per device-specific pinout tables in DS022-4.

What block RAM configuration options does XCV400E-8PQ240C offer?

XCV400E-8PQ240C provides 40 block SelectRAM units totaling 163,840 bits, each configurable as true dual-port 4096-bit RAM with independent width/depth settings per port. Supported configurations include 4096×1, 2048×2, 1024×4, 512×8, and 256×16 - documented in DS022-2 Table 5 and Figure 6.